145665837 has 16 divisors (see below), whose sum is σ = 227160000. Its totient is φ = 91999152.

The previous prime is 145665797. The next prime is 145665847. The reversal of 145665837 is 738566541.

145665837 is a `hidden beast` number, since 1 + 4 + 5 + 66 + 583 + 7 = 666.

It is not a de Polignac number, because 145665837 - 2¹¹ = 145663789 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 145665792 and 145665801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145665847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141462 + ... + 142487.

It is an arithmetic number, because the mean of its divisors is an integer number (14197500).

Almost surely, 2^145665837 is an apocalyptic number.

It is an amenable number.

145665837 is a deficient number, since it is larger than the sum of its proper divisors (81494163).

145665837 is a wasteful number, since it uses less digits than its factorization.

145665837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283977 (or 283971 counting only the distinct ones).

The product of its digits is 604800, while the sum is 45.

The square root of 145665837 is about 12069.2102889957. The cubic root of 145665837 is about 526.1617050670.

The spelling of 145665837 in words is "one hundred forty-five million, six hundred sixty-five thousand, eight hundred thirty-seven".